Mariana Diaz Oliva defeated Bethanie Mattek Sands 6-4 6-3 in the US Open round of 128 on hard. The result followed the form book — Mariana Diaz Oliva came in leading the head-to-head 1–0. Mariana Diaz Oliva extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-01-19 | Australian Open | Q64 | hard | Mariana Diaz Oliva | 6-1 6-3 |
Averages over each player's completed matches in the selected window (19 vs 200). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About